The manufacturer claim of its fule efficiency seems not in order and misleading.Let me provide a simple mathematical calculation:
The price of battery is Rs14000.00 per set for Yo speed, which is likely to be revised upwards.
The period of warranty for battery is one year, hence the expenditure per month is Rs.1167.00 and with this amount one can purchase appx 19 Ltr of petrol and can drive appx 950 KM (considering 50KM/Ltr consumption).
In view of above the running cost of Yo byke seems little more than a common petrol driven two wheeler, even ignoring the cost towards charging etc.
Moreover, the cost of Controller, Charger etc are much constilier than any mechanical moving spare parts.
So why one should purchase a Yo byke?